Press the tofu for 15 minutes to remove excess moisture, then cut it into 1-inch cubes.
Toss the tofu cubes in a bowl with cornstarch until they are lightly and evenly coated.
Heat the avocado oil in a large non-stick skillet over medium-high heat.
Add the tofu to the skillet and fry until each side is golden and crispy, then remove and set aside.
In the same skillet, add the broccoli florets and sliced red bell pepper, sautéing for 3-4 minutes until tender-crisp.
Add the minced garlic and grated ginger to the vegetables and cook for 1 minute until fragrant.
In a small bowl, whisk together the chili garlic sauce, tamari, toasted sesame oil, and rice vinegar.
Return the crispy tofu to the skillet and pour the sauce over the tofu and vegetables.
Toss everything together for 1-2 minutes until the sauce thickens and coats every piece.
Serve immediately garnished with sesame seeds and thinly sliced green onions.